FILE - In this Jan. 18, 2017 file photo, President Barack Obama speaks during a news conference in the briefing room of the White House in Washington. Former President Barack Obama will speak Monday, April 24, 2017, in Chicago with young community leaders and organizers in an event at the University of Chicago, where his presidential library is planned. (AP Photo/Pablo Martinez Monsivais, File)

FILE - In this Jan. 18, 2017 file photo, President Barack Obama speaks during a news conference in the briefing room of the White House in Washington. Former President Barack Obama will speak Monday, April 24, 2017, in Chicago with young community leaders and organizers in an event at the University of Chicago, where his presidential library is planned. (AP Photo/Pablo Martinez Monsivais, File)